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ZOO 101 ZOO 101 Past Questions Objective Question

Question

The evolutionary advantage of a four-chambered heart in mammals is:
Options
A Mixing of oxygenated and deoxygenated blood
B Separation of oxygenated and deoxygenated blood
Correct Answer
C Reduced circulation efficiency
D Single circulation pathway
Correct Answer

Option B is the correct answer.

Detailed Explanation

The four-chambered heart ensures complete separation of oxygenated and deoxygenated blood, enabling efficient oxygen delivery to tissues and supporting endothermy.

Hint

Consider the advantage of separating oxygenated from deoxygenated blood.

Question Info